74HC190 Datasheet, PDF (11/13 Pages) NXP Semiconductors – Presettable synchronous BCD decade up/down counter

Philips Semiconductors
Presettable synchronous BCD decade
up/down counter
Product specification
74HC/HCT190
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH
t_PHL/ t_PLH
propagation delay
CP to Q_n
propagation delay
CP to TC
28 48
60
34 58
73
t_PHL/ t_PLH propagation delay
CP to RC
20 35
44
t_PHL/ t_PLH propagation delay
CE to RC
18 33
41
t_PHL/ t_PLH
t_PHL/ t_PLH
t_PHL/ t_PLH
propagation delay
D_n to Q_n
propagation delay
PL to Q_n
propagation delay
U/D to TC
24 44
55
29 49
61
24 45
56
t_PHL/ t_PLH propagation delay
U/D to RC
26 45
56
t_THL/ t_TLH output transition time
7 15
19
72 ns 4.5 Fig.10
87 ns 4.5 Fig.10
53 ns 4.5 Fig.11
50 ns 4.5 Fig.11
66 ns 4.5 Fig.12
74 ns 4.5 Fig.13
68 ns 4.5 Fig.14
68 ns 4.5 Fig.14
22 ns 4.5 Fig.15
t_W
clock pulse width
25 10
31
38
ns 4.5 Fig.10
HIGH or LOW
t_W
parallel load pulse width 22 12
28
33
ns 4.5 Fig.15
LOW
t_rem
removal time
71
9
11
ns 4.5 Fig.15
PL to CP
t_su
set-up time
U/D to CP
42 25
53
63
ns 4.5 Fig.17
t_su
set-up time
D_n to PL
t_su
set-up time
CE to CP
20 10
25
30
ns 4.5 Fig.16
31 18
39
47
ns 4.5 Fig.17
t_h
hold time
U/D to CP
0 −18
0
0
ns 4.5 Fig.17
t_h
hold time
D_n to PL
t_h
hold time
CE to CP
0 −6
0
0
ns 4.5 Fig.16
0 −10
0
0
ns 4.5 Fig.17
f_max
maximum clock pulse 16 27
13
11
frequency
MHz 4.5 Fig.10
December 1990
11